I'm afraid I agree with bry and Juggy, I also feel there's an unintended bias to the contest, but I tend to feel it's just one of those things. When I first started posting entries, I made a conscious effort to post covers from the British comics I grew up with, wanting to share some of the material that formed me as a comics fan, but I gradually noticed that my entries tended to provoke little comment, and that started to leave me feeling disillusioned, I started to not enjoy the contest. I also started to notice that the same people kept winning, which was mildly irritating. And then I realized: despite the fact that there are members from all over, most of the most active members here are a) American and b) in a certain age range, which means they have similar tastes-in particular, mainstream American superheroes from the sixties to about the early eighties. They vote for each other's entries because those entries reflect their experience and their particular era. I can post what I consider an iconic Kevin O'Neill 2000 AD cover from 1983, and it will be ignored by most because it doesn't 'speak' to them, it's not a cover they'll have any emotional  connection to. Likewise, a Silver Age Lois Lane cover can provoke a page of fond comments, even though to me, it means nothing-it just registers as a rather silly book from before I was born, in a culturally alien setting, with a character I never cared about. It's sad, but it's inevitable, and in no way deliberate.